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Melting point: 2,177 °C (3,951 °F; 2,450 K) ... soluble Solubility in hydrochloric acid: insoluble Structure Crystal structure. ... also known as cerium oxide ...
Cerium(IV) oxide, also known as ceric oxide, ceric dioxide, ceria, cerium oxide or cerium dioxide, is an oxide of the rare-earth metal cerium. It is a pale yellow-white powder with the chemical formula CeO 2. It is an important commercial product and an intermediate in the purification of the element from the ores.
The oxalates are converted to oxides by annealing. The oxides are dissolved in nitric acid, but cerium oxide is insoluble in HNO 3 and hence precipitates out. [20] Care must be taken when handling some of the residues as they contain 228 Ra, the daughter of 232 Th, which is a strong gamma emitter. [51]
The Gmelin rare earths handbook lists 1522 °C and 1550 °C as two melting points given in the literature, the most recent reference [Handbook on the chemistry and physics of rare earths, vol.12 (1989)] is given with 1529 °C.
Gadolinium-doped ceria (GDC) (known alternatively as gadolinia-doped ceria, gadolinium-doped cerium oxide (GCO), cerium-gadolinium oxide (CGO), or cerium(IV) oxide, gadolinium-doped, formula Gd:CeO 2) is a ceramic electrolyte used in solid oxide fuel cells (SOFCs).
Cerium oxide may refer to: Cerium(III) oxide, Ce 2 O 3, also known as dicerium trioxide; Cerium(III, IV) oxide, Ce 3 O 4 (dark blue)
In nitric acid, nitrato ceric acid [9] (H 2 [Ce(NO 3) 6] and H[Ce(NO 3) 5.H 2 O]) are present. The solubility of this nitrate in non-polar solvents allows the separation of cerium from other rare earths. [8] Basic cerium(IV) nitrate has the formula Ce(NO 3) 3.OH.3H 2 O. It also forms upon evaporation of solutions of cerium(IV) in nitric acid. [10]
Cerium(III) chloride (CeCl 3), also known as cerous chloride or cerium trichloride, is a compound of cerium and chlorine. It is a white hygroscopic salt; it rapidly absorbs water on exposure to moist air to form a hydrate , which appears to be of variable composition, [ 1 ] though the heptahydrate CeCl 3 ·7H 2 O is known.